CN215697965U - Quick changing device for metallurgical water gap - Google Patents

Abstract

The utility model discloses a metallurgical nozzle quick-change device which comprises a blind plate, a blind plate bracket rotationally connected with a nozzle quick-change mechanism, a curved bar used for being in contact with the blind plate and an actuator used for controlling the curved bar to linearly move, wherein the blind plate is arranged on the blind plate bracket. The metallurgical nozzle quick-changing device can simplify the operation steps of quick-changing the nozzle of the metallurgical continuous casting tundish, reduce the labor intensity of workers, shorten the operation time of quick-changing the nozzle, be beneficial to reducing the length of a nozzle blank during continuous casting, improve the production qualification rate and improve the safety of quick-changing operation of the nozzle.

Description

Quick changing device for metallurgical water gap

Technical Field

The utility model belongs to the technical field of metallurgy, and particularly relates to a quick change device for a metallurgical water gap.

Background

At present, in a metallurgical continuous casting system in China, a tundish water gap quick-changing technology is widely applied, and the tundish water gap quick-changing technology has the advantages of greatly increasing the number of single-ladle continuous casting furnaces, improving the yield of molten steel and the operation rate of a casting machine, reducing the comparative cost of steel per ton and the like.

The working positions of the prior tundish nozzle quick-change device are mostly shown in figure 4: a rotatable cross arm 1, on which a driving oil cylinder and a hook connected with a nozzle quick-change mechanism 4 are arranged; the blind plate 2 is positioned at a preparation position of the water gap quick-change mechanism 4, and when an emergency accident occurs and the water gap cannot be closed, the blind plate 2 can be pushed by the operation oil cylinder to eject the water gap 3 at the working position, so that the water gap is closed, the casting flow is cut off, and the safety is ensured.

At present, the rapid replacing operation steps of the tundish nozzle are as follows:

(1) opening the cross arm 1, as shown in fig. 5;

(2) taking out the blind plate 2;

(3) placing a new water gap to be replaced at a preparation position of the water gap quick-change mechanism 4;

(4) closing the crossbar 1, as shown in fig. 3;

(5) the new water port is ejected out of the original water port 4 by operating the oil cylinder and enters a working position;

(6) opening the cross arm 1;

(7) placing a blind plate 2;

(8) and closing the cross arm 1 and carrying out normal casting operation.

In the above operation steps, the opening and closing of the cross arm 1 and the taking out and putting in of the blind plate 2 are both manually operated, and can not be realized by means of tools, so that the labor intensity of workers is high. When the oil cylinder is operated to eject the new nozzle out of the original nozzle 4 in the step (e) and the new nozzle enters a working position, if steel running occurs due to poor nozzle joint conditions or other reasons, the blind plate 2 cannot be manually placed in a preparation position of the quick-change mechanism 4, and the oil cylinder is operated to push the blind plate 2 out of the nozzle 3 in the working position to close the nozzle and cut off the casting flow. If the stopper rod for controlling the flow of the tundish cannot close the water gap, the situation has certain danger and potential safety production hazards.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a quick-change device for a metallurgical nozzle, and aims to improve the safety of quick-change operation of the nozzle.

In order to achieve the purpose, the utility model adopts the technical scheme that: metallurgical mouth of a river quick change device, including the blind plate, with mouth of a river quick change mechanism rotate be connected the blind plate bracket, be used for with the curved bar that the blind plate contacted and be used for controlling the curved bar and carry out rectilinear movement's executor, the blind plate sets up on the blind plate bracket.

The actuator is an oil cylinder and is connected with the curved rod.

The curved bar is of an L-shaped structure.

And the blind plate bracket is provided with a positioning block which is used for being in contact with the nozzle quick-change mechanism.

The metallurgical nozzle quick-changing device can simplify the operation steps of quick-changing the nozzle of the metallurgical continuous casting tundish, reduce the labor intensity of workers, shorten the operation time of quick-changing the nozzle, be beneficial to reducing the length of a nozzle blank during continuous casting, improve the production qualification rate and improve the safety of quick-changing operation of the nozzle.

Drawings

The description includes the following figures, the contents shown are respectively:

fig. 1 is a schematic structural view of the quick change device for the metallurgical nozzle of the utility model when a blind plate bracket is closed;

fig. 2 is a schematic structural view of the quick change device for the metallurgical nozzle of the utility model when a blind plate bracket is opened;

fig. 3 is a schematic structural view of a blind plate bracket of the quick change device for the metallurgical nozzle of the utility model;

FIG. 4 is a schematic structural diagram of a water gap quick-change device of a conventional tundish when a cross arm is closed;

FIG. 5 is a schematic structural diagram of a water gap quick-change device of a conventional tundish when a cross arm is opened;

labeled as: 1. a cross arm; 2. a blind plate; 3. a water gap; 4. a water gap quick-changing mechanism; 5. an actuator; 6. a drive device; 7. a curved bar; 8. a blind plate; 9. positioning blocks; 10. a blind plate bracket; 11. a raw water port; 11a, a new water port; 12. a water gap quick-changing mechanism; 13. a screw; 14. locking the nut; 15. a spring; 16. and a ball.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.

As shown in fig. 1 and 2, the utility model provides a quick change device for a metallurgical nozzle, which comprises a blind plate 8, a blind plate bracket 10 rotationally connected with a nozzle quick change mechanism 12, a curved rod 7 used for being in contact with a new nozzle 11a or the blind plate 8, and an actuator 5 used for controlling the curved rod 7 to linearly move, wherein the blind plate 8 is arranged on the blind plate bracket 10, and the rotation center line of the blind plate bracket 10 is spatially vertical to the moving direction of the curved rod 7.

Specifically, as shown in fig. 1 and 2, a driving device 6 is mounted on one side of the nozzle quick-change mechanism 12, an actuator 5 is mounted on the driving device 6, the actuator 5 is an oil cylinder, and the actuator 5 is connected to a curved rod 7. When a new nozzle 11a is placed at the preparation position of the nozzle quick-change mechanism 12, the actuator 5 drives the curved rod 7 to move towards the position of the new nozzle 11a, the curved rod 7 pushes the new nozzle 11a to move, and the new nozzle 11a ejects the raw nozzle 11 in the nozzle quick-change mechanism 12. The other side of the nozzle quick-change mechanism 12 is provided with a rotatable blind plate bracket 10, the blind plate 8 is movably arranged on the blind plate bracket 10, and under the pushing action of the curved lever 7, the blind plate 8 can linearly move at a preparation position of the nozzle quick-change mechanism 12 so as to push the nozzle to move. The adjustable screw 13 provides a pretightening force to ensure that the blind plate 8 does not shake along with the rotation of the blind plate bracket 10, and the pretightening force is smaller than the thrust provided by the actuator 5.

As shown in fig. 3, the blind plate 8 is placed in the notch of the blind plate bracket 10, the screw 13 is rotated clockwise, the ball 16 is pressed against the handle on the blind plate 8 through the compression spring 15, after the pretightening force is adjusted properly, the screw 13 is locked by the lock nut 14, and the compression spring 15 is clamped between the ball 16 and the screw 13.

The blind plate bracket 10 is provided with a positioning block 9 which is used for being in contact with the nozzle quick-change mechanism 12, one end of the positioning block 9 is fixedly connected with the blind plate bracket 10, and the other end face of the positioning block 9 is used for being in contact with the nozzle quick-change mechanism 12 so as to limit the rotation angle of the blind plate bracket 10. When the blind plate 8 enters the preparation position of the nozzle quick-change mechanism 12, the positioning block 9 is abutted with the nozzle quick-change mechanism 12, so that the blind plate bracket 10 stops rotating.

As shown in fig. 1 and 2, the curved rod 7 is of an L-shaped structure, one end of the curved rod 7 is connected with the actuator 5, and the other end of the curved rod 7 is used for contacting with the blind plate 8.

The working process of the quick change device for the metallurgical nozzle comprises the following steps:

the working position of the device in normal casting is shown in figure 1: the nozzle 11 is positioned at the working position of the nozzle quick-change mechanism 12, and the casting operation is normal; the blind plate 8 is placed on the blind plate bracket 10, and the blind plate 8 is positioned at a preparation position of the quick-change mechanism 12 of the water gap. When an emergency accident happens and the water gap can not be closed, the actuator 5 can be operated to push the curved rod 7 to push the blind plate 8. After the curved rod 7 contacts the blind plate 8, the screw 13 provides a pretightening force smaller than the thrust provided by the actuator 5, so that the blind plate 8 is pushed out of the blind plate bracket 10, the blind plate 8 ejects the raw water gap 11 at the working position, the water gap is closed, the casting flow is cut off, and the safety is ensured.

The quick-change operation steps of the nozzle of the device are as follows:

1. the blind plate bracket 10 is opened, and the blind plate 8 leaves the preparation position of the quick-change mechanism 12 of the water opening, as shown in fig. 2;

2. placing a new nozzle 11a to be replaced in a preparation position of the nozzle quick-change mechanism 12;

3. the actuator 5 is operated, the crank rod 7 is driven to push the new water port 11a to eject the original water port 11, and the new water port 11a enters a working position;

4. the blind plate bracket 10 is closed, and the blind plate 8 enters the ready position of the water port quick-changing mechanism 12, and the casting operation is normal, as shown in fig. 1.

When the actuator 5 is operated in the step 3, the crank rod 7 is driven to push the new water gap 11a to eject the original water gap 11, and when the new water gap 11a enters a working position, if steel running occurs due to poor water gap joint surface condition or other reasons, a long metal rod can be used to push the blind plate bracket 10 to rotate, so as to drive the blind plate 8 to enter a preparation position of the water gap quick-changing mechanism 12, and then the actuator 5 is operated to push the blind plate 8 to eject the water gap 11 at the working position to close the water gap and cut off a casting flow, so that production safety is ensured.

The utility model is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the utility model are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the utility model; the present invention is not limited to the above embodiments, and can be modified in various ways.

Claims (4)

1. Metallurgical mouth of a river quick change device, including the blind plate, its characterized in that: the gate quick-change mechanism is characterized by further comprising a blind plate bracket rotationally connected with the gate quick-change mechanism, a curved bar used for being in contact with the blind plate and an actuator used for controlling the curved bar to move linearly, and the blind plate is arranged on the blind plate bracket.

2. A metallurgical nozzle quick-change device according to claim 1, wherein: the actuator is an oil cylinder and is connected with the curved rod.

3. A metallurgical nozzle quick-change device according to claim 1 or 2, wherein: the curved bar is of an L-shaped structure.

4. A metallurgical nozzle quick-change device according to claim 1 or 2, wherein: and the blind plate bracket is provided with a positioning block which is used for being in contact with the nozzle quick-change mechanism.

Images